Fatal error: Uncaught ArgumentCountError: fpow() expects exactly 2 arguments, 1 given in /srv/core-php/core3.php:5 Stack trace: #0 /srv/core-php/core3.php(5): fpow() #1 /srv/studentsource.org/units/core/core3.php(2): require('...') #2 /srv/studentsource.org/units/convert.php(3): require('...') #3 {main} thrown in /srv/core-php/core3.php on line 5